[Python-checkins] cpython: Issue #20167: Suppress 3.4 specific 'Exception ignored' messages.
terry.reedy
python-checkins at python.org
Sat Feb 8 10:48:00 CET 2014
http://hg.python.org/cpython/rev/f9f2c57f7d00
changeset: 89030:f9f2c57f7d00
user: Terry Jan Reedy <tjreedy at udel.edu>
date: Sat Feb 08 04:47:29 2014 -0500
summary:
Issue #20167: Suppress 3.4 specific 'Exception ignored' messages.
Original patch by Tal Einat.
files:
Lib/idlelib/MultiCall.py | 27 +++++++++++++++++++++++----
1 files changed, 23 insertions(+), 4 deletions(-)
diff --git a/Lib/idlelib/MultiCall.py b/Lib/idlelib/MultiCall.py
--- a/Lib/idlelib/MultiCall.py
+++ b/Lib/idlelib/MultiCall.py
@@ -57,6 +57,13 @@
for number in range(len(_modifiers))
for name in _modifiers[number]])
+# In 3.4, if no shell window is ever open, the underlying Tk widget is
+# destroyed before .__del__ methods here are called. The following
+# is used to selectively ignore shutdown exceptions to avoid
+# 'Exception ignored' messages. See http://bugs.python.org/issue20167
+APPLICATION_GONE = '''\
+can't invoke "bind" command: application has been destroyed'''
+
# A binder is a class which binds functions to one type of event. It has two
# methods: bind and unbind, which get a function and a parsed sequence, as
# returned by _parse_sequence(). There are two types of binders:
@@ -98,7 +105,12 @@
def __del__(self):
if self.handlerid:
- self.widget.unbind(self.widgetinst, self.sequence, self.handlerid)
+ try:
+ self.widget.unbind(self.widgetinst, self.sequence,
+ self.handlerid)
+ except tkinter.TclError as e:
+ if e.args[0] == APPLICATION_GONE:
+ pass
# An int in range(1 << len(_modifiers)) represents a combination of modifiers
# (if the least significent bit is on, _modifiers[0] is on, and so on).
@@ -227,7 +239,11 @@
def __del__(self):
for seq, id in self.handlerids:
- self.widget.unbind(self.widgetinst, seq, id)
+ try:
+ self.widget.unbind(self.widgetinst, seq, id)
+ except tkinter.TclError as e:
+ if e.args[0] == APPLICATION_GONE:
+ break
# define the list of event types to be handled by MultiEvent. the order is
# compatible with the definition of event type constants.
@@ -390,8 +406,11 @@
func, triplets = self.__eventinfo[virtual]
if func:
for triplet in triplets:
- self.__binders[triplet[1]].unbind(triplet, func)
-
+ try:
+ self.__binders[triplet[1]].unbind(triplet, func)
+ except tkinter.TclError as e:
+ if e.args[0] == APPLICATION_GONE:
+ break
_multicall_dict[widget] = MultiCall
return MultiCall
--
Repository URL: http://hg.python.org/cpython
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